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[Python] Add documentation about using pyarrow from other Cython and C++ projects

[Python] Add ASV benchmarks for streaming columnar deserialization

[Plasma] Add optional extension for allocating memory on GPUs

[JAVA] Restructure ValueVector hierarchy to minimize compile-time generated code

[Java] Add dockerized test setup to validate Spark integration

[Python] Instructions for setting up nightly builds on Linux

[C++] Add convenience method to construct Buffer from a string that owns its memory

[Python] Permit categorical conversions in Table.to_pandas on a per-column basis

[Python] Accept hdfs:// prefixes in parquet.read_table and attempt to connect to HDFS

[Python] Create StructArray from sequence of dicts given a known data type

[Python] StructArray.from_arrays should handle sequences that are coercible to arrays

[C++] Add method to BinaryBuilder to reserve space for value data

[C++] Add DictionaryArray::FromArrays alternate ctor that can check or sanitized ¡°untrusted¡± indices

[Java] Rename MapVector to StructVector

Èí¼þÏêÇ飺http://arrow.apache.org/release/0.9.0.html

ÏÂÔصØÖ·£ºhttp://http//arrow.apache.org/install/

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